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linux/drivers/pcmcia/socket_sysfs.c
Dominik Brodowski 84897fc052 pcmcia: pccard_read_tuple and TUPLE_RETURN_COMMON cleanup 
pccard_read_tuple(), which is only used by the PCMCIA core, should
handle TUPLE_RETURN_COMMON more sensibly: If a specific function (which
may be 0) is requested, set tuple.Attributes = 0 as was done in all
PCMCIA drivers. If, however, BIND_FN_ALL is requested, return the
"common" tuple. As to the callers of pccard_read_tuple():

- All calls to pcmcia_validate_cis() had set the "function" parameter to
  BIND_FN_ALL. Therefore, remove the "function" parameter and make the
  parameter to pccard_read_tuple explicit.

- Calls to CISTPL_VERS_1 and CISTPL_MANFID now set BIND_FN_ALL. This was
  already the case for calls to CISTPL_LONGLINK_MFC.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-10-19 00:29:36 +02:00

390 lines
9.2 KiB
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/*
* socket_sysfs.c -- most of socket-related sysfs output
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* (C) 2003 - 2004 Dominik Brodowski
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/ss.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include "cs_internal.h"
#define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct pcmcia_socket *s = to_socket(dev);
if (!(s->state & SOCKET_PRESENT))
return -ENODEV;
if (s->state & SOCKET_CARDBUS)
return sprintf(buf, "32-bit\n");
return sprintf(buf, "16-bit\n");
}
static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct pcmcia_socket *s = to_socket(dev);
if (!(s->state & SOCKET_PRESENT))
return -ENODEV;
if (s->socket.Vcc)
return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10,
s->socket.Vcc % 10);
return sprintf(buf, "X.XV\n");
}
static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct pcmcia_socket *s = to_socket(dev);
if (!(s->state & SOCKET_PRESENT))
return -ENODEV;
return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
}
static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct pcmcia_socket *s = to_socket(dev);
if (!(s->state & SOCKET_PRESENT))
return -ENODEV;
return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
}
static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
ssize_t ret;
struct pcmcia_socket *s = to_socket(dev);
if (!count)
return -EINVAL;
ret = pcmcia_insert_card(s);
return ret ? ret : count;
}
static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
static ssize_t pccard_show_card_pm_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct pcmcia_socket *s = to_socket(dev);
return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
}
static ssize_t pccard_store_card_pm_state(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
ssize_t ret = -EINVAL;
struct pcmcia_socket *s = to_socket(dev);
if (!count)
return -EINVAL;
if (!(s->state & SOCKET_SUSPEND) && !strncmp(buf, "off", 3))
ret = pcmcia_suspend_card(s);
else if ((s->state & SOCKET_SUSPEND) && !strncmp(buf, "on", 2))
ret = pcmcia_resume_card(s);
return ret ? -ENODEV : count;
}
static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
static ssize_t pccard_store_eject(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
ssize_t ret;
struct pcmcia_socket *s = to_socket(dev);
if (!count)
return -EINVAL;
ret = pcmcia_eject_card(s);
return ret ? ret : count;
}
static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
static ssize_t pccard_show_irq_mask(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct pcmcia_socket *s = to_socket(dev);
return sprintf(buf, "0x%04x\n", s->irq_mask);
}
static ssize_t pccard_store_irq_mask(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
ssize_t ret;
struct pcmcia_socket *s = to_socket(dev);
u32 mask;
if (!count)
return -EINVAL;
ret = sscanf (buf, "0x%x\n", &mask);
if (ret == 1) {
s->irq_mask &= mask;
ret = 0;
}
return ret ? ret : count;
}
static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
static ssize_t pccard_show_resource(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pcmcia_socket *s = to_socket(dev);
return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
}
static ssize_t pccard_store_resource(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long flags;
struct pcmcia_socket *s = to_socket(dev);
if (!count)
return -EINVAL;
spin_lock_irqsave(&s->lock, flags);
if (!s->resource_setup_done)
s->resource_setup_done = 1;
spin_unlock_irqrestore(&s->lock, flags);
mutex_lock(&s->skt_mutex);
if ((s->callback) &&
(s->state & SOCKET_PRESENT) &&
!(s->state & SOCKET_CARDBUS)) {
if (try_module_get(s->callback->owner)) {
s->callback->requery(s, 0);
module_put(s->callback->owner);
}
}
mutex_unlock(&s->skt_mutex);
return count;
}
static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, loff_t off, size_t count)
{
tuple_t tuple;
int status, i;
loff_t pointer = 0;
ssize_t ret = 0;
u_char *tuplebuffer;
u_char *tempbuffer;
tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL);
if (!tuplebuffer)
return -ENOMEM;
tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL);
if (!tempbuffer) {
ret = -ENOMEM;
goto free_tuple;
}
memset(&tuple, 0, sizeof(tuple_t));
tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON;
tuple.DesiredTuple = RETURN_FIRST_TUPLE;
tuple.TupleOffset = 0;
status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple);
while (!status) {
tuple.TupleData = tuplebuffer;
tuple.TupleDataMax = 255;
memset(tuplebuffer, 0, sizeof(u_char) * 255);
status = pccard_get_tuple_data(s, &tuple);
if (status)
break;
if (off < (pointer + 2 + tuple.TupleDataLen)) {
tempbuffer[0] = tuple.TupleCode & 0xff;
tempbuffer[1] = tuple.TupleLink & 0xff;
for (i = 0; i < tuple.TupleDataLen; i++)
tempbuffer[i + 2] = tuplebuffer[i] & 0xff;
for (i = 0; i < (2 + tuple.TupleDataLen); i++) {
if (((i + pointer) >= off) &&
(i + pointer) < (off + count)) {
buf[ret] = tempbuffer[i];
ret++;
}
}
}
pointer += 2 + tuple.TupleDataLen;
if (pointer >= (off + count))
break;
if (tuple.TupleCode == CISTPL_END)
break;
status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple);
}
kfree(tempbuffer);
free_tuple:
kfree(tuplebuffer);
return (ret);
}
static ssize_t pccard_show_cis(struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
unsigned int size = 0x200;
if (off >= size)
count = 0;
else {
struct pcmcia_socket *s;
unsigned int chains;
if (off + count > size)
count = size - off;
s = to_socket(container_of(kobj, struct device, kobj));
if (!(s->state & SOCKET_PRESENT))
return -ENODEV;
if (pccard_validate_cis(s, &chains))
return -EIO;
if (!chains)
return -ENODATA;
count = pccard_extract_cis(s, buf, off, count);
}
return (count);
}
static ssize_t pccard_store_cis(struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct pcmcia_socket *s = to_socket(container_of(kobj, struct device, kobj));
int error;
if (off)
return -EINVAL;
if (count >= CISTPL_MAX_CIS_SIZE)
return -EINVAL;
if (!(s->state & SOCKET_PRESENT))
return -ENODEV;
error = pcmcia_replace_cis(s, buf, count);
if (error)
return -EIO;
mutex_lock(&s->skt_mutex);
if ((s->callback) && (s->state & SOCKET_PRESENT) &&
!(s->state & SOCKET_CARDBUS)) {
if (try_module_get(s->callback->owner)) {
s->callback->requery(s, 1);
module_put(s->callback->owner);
}
}
mutex_unlock(&s->skt_mutex);
return count;
}
static struct attribute *pccard_socket_attributes[] = {
&dev_attr_card_type.attr,
&dev_attr_card_voltage.attr,
&dev_attr_card_vpp.attr,
&dev_attr_card_vcc.attr,
&dev_attr_card_insert.attr,
&dev_attr_card_pm_state.attr,
&dev_attr_card_eject.attr,
&dev_attr_card_irq_mask.attr,
&dev_attr_available_resources_setup_done.attr,
NULL,
};
static const struct attribute_group socket_attrs = {
.attrs = pccard_socket_attributes,
};
static struct bin_attribute pccard_cis_attr = {
.attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR },
.size = 0x200,
.read = pccard_show_cis,
.write = pccard_store_cis,
};
int pccard_sysfs_add_socket(struct device *dev)
{
int ret = 0;
ret = sysfs_create_group(&dev->kobj, &socket_attrs);
if (!ret) {
ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
if (ret)
sysfs_remove_group(&dev->kobj, &socket_attrs);
}
return ret;
}
void pccard_sysfs_remove_socket(struct device *dev)
{
sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
sysfs_remove_group(&dev->kobj, &socket_attrs);
}
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